549905664 has 288 divisors, whose sum is σ = 1935553536. Its totient is φ = 134184960.

The previous prime is 549905651. The next prime is 549905669. The reversal of 549905664 is 466509945.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549905669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1005039 + ... + 1005585.

It is an arithmetic number, because the mean of its divisors is an integer number (6720672).

Almost surely, 2^549905664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549905664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (967776768).

549905664 is an abundant number, since it is smaller than the sum of its proper divisors (1385647872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549905664 is a wasteful number, since it uses less digits than its factorization.

549905664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The square root of 549905664 is about 23450.0674625895. The cubic root of 549905664 is about 819.2744245941.

The spelling of 549905664 in words is "five hundred forty-nine million, nine hundred five thousand, six hundred sixty-four".